Getting Started with Green Roofing - GreenComposites

Getting Started with Green Roofing

Getting Started with Evergreen GRP Roofing Membrane

1. Introduction:

Evergreen GRP roofing membrane is a versatile and durable solution for creating a robust roofing system, especially when preparing for the installation of a final living roof. This guide will walk you through the steps of properly applying Evergreen GRP on a new roof surface made of OSB 3. For Full guide ensure you read our brochure

2. Understanding Roof Surfaces:

Before you begin, confirm that you are working on a new roof surface constructed with OSB 3. For overlay continue reading.

3. Surface Preparation:

For New Roof on OSB 3:

  • Ensure the OSB 3 substrate is clean, dry, and free from any debris or protruding nails.
  • Inspect the roof for any structural issues and address them before proceeding.
  • Confirm that the surface is smooth and even, with no irregularities that could affect the application.

4. Materials and Tools:

Gather the following materials and tools before starting the application:


  • Evergreen GRP roofing membrane kit (including resin, catalyst, matting, and topcoat).
  • Acetone or suitable cleaner for surface preparation.
  • Paintbrushes and rollers.
  • Mixing buckets and stirrers.
  • Disposable gloves and safety goggles.


  • Cutting tools (e.g., utility knife).
  • Rollers for even application.
  • Fibreglass matting for reinforcement if required.

5. Safety Precautions:

  • Wear appropriate PPE, including gloves and safety goggles.
  • Ensure proper ventilation in the working area.
  • Avoid smoking and open flames during the application process.

6. Product Mixing and Application:

  • Follow the manufacturer's guidelines for mixing the Evergreen GRP roofing membrane components.
  • Apply the resin mixture evenly using a roller, ensuring complete coverage.
  • Lay the fiberglass matting if specified in the product instructions.
  • Apply additional layers as needed, allowing sufficient curing time between each layer.

7. Curing and Drying:

  • Allow the Evergreen GRP roofing membrane to cure according to the manufacturer's recommendations.
  • Consider environmental factors such as temperature and humidity, as they can affect curing times.

8. Quality Control:

  • Inspect the applied membrane for any air bubbles, uneven surfaces, or imperfections.
  • Make any necessary adjustments or corrections while the membrane is still curing.

9. Finishing Touches:

  • Apply the topcoat according to the manufacturer's instructions for additional protection and a smooth finish.

10. Maintenance Tips:

  • Follow any maintenance guidelines provided by the manufacturer to ensure the longevity of the Evergreen GRP roofing membrane.

11. Troubleshooting:

  • Address any issues that may arise during or after the application process.
  • Consult the manufacturer or a professional if needed for guidance on problem resolution.

12. Conclusion:

Congratulations on completing the application of the Evergreen GRP roofing membrane! By following these detailed steps, you have taken a crucial step toward creating a durable and reliable foundation for the final living roof installation.

Always refer to the specific technical data sheet and installation guide provided by Evergreen for accurate information tailored to the product you are using.

Getting started with living roofs, grp tools

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